Sensing apparatus for detecting a physical quantity, including memory circuits storing characteristics adjusting data

A sensing element detects a predetermined physical quantity and generates a sensor signal. A signal processing circuit processes the sensor signal and generates an output signal. A first memory circuit stores characteristics control data used for adjusting sensor output characteristics. An adjusting circuit performs an adjustment to equalize the sensor output to a target value based on the characteristics control data stored in the first memory circuit. A second memory circuit stores fine control data used in a fine adjustment performed to correct a deviation resulting after the adjustment based on the characteristics control data stored in said first memory circuit.